CN109973727A - A kind of pressure pipeline connection structure - Google Patents
A kind of pressure pipeline connection structure Download PDFInfo
- Publication number
- CN109973727A CN109973727A CN201711454971.3A CN201711454971A CN109973727A CN 109973727 A CN109973727 A CN 109973727A CN 201711454971 A CN201711454971 A CN 201711454971A CN 109973727 A CN109973727 A CN 109973727A
- Authority
- CN
- China
- Prior art keywords
- conduit
- connection structure
- pressure pipeline
- pipeline connection
- fitting body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 35
- 238000003825 pressing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A kind of pressure pipeline connection structure, comprising: the conduit and fitting body and cap nut axially arranged, further include: casing, casing include: the sleeve body arranged and be socketed positioned at the periphery of conduit, and positioned at the flange sections in sleeve body bottom cylindrical week；Flange sections are located at the inside of cap nut, and the limit that leans respectively with the outer end face of the inner face of cap nut and fitting body of the both sides of the face of flange sections is engaged；And in the region that sleeve body and conduit coincide, sleeve body, which has with conduit towards axis, squeezes the jointing for forming Inward deflection and being mutually fixedly connected through press fitting, its structure is simple and easy for installation, and, on-site construction operations low to pipe size required precision are simple, are connected firmly, sealed reliable.
Description
Technical field
The present invention is about a kind of pipe connecting structure, in particular for the internal pipe connecting structure with certain pressure.
Background technique
Usually there is the connection between a large amount of pipeline in pipeline engineering project, between the pipeline including different tube diameters
Transformation connection, the connection between pipeline and related valve component.Important indicator as pipeline quality of connection comprising leakproofness
The unfailing performance of connection between energy and pipeline.Especially in the pipe-line system with certain pressure (such as less than 70Mpa,
Especially 35-70MPa), deposit the risk being in axial direction detached between tubes.Therefore pressure pipeline connection structure is mutual solid
It is fixed particularly important.
The connection structure of common pressure pipeline is divided into welded fitting and weldless connection, bite type structure, welding
Bulb type structure, flared type structure, flanging type structure, walform formula structure etc..
Bite type structure forms sealing, while banding conduit between conduit and fitting body inner conical surface, including preventing conduit
Pressure effect is lower to extract.But it is very high to the outer diameter requirement of conduit, to requirements such as the sizes, hardness, elasticity of forward and backward cutting ferrule
It is very high, while also proposed more harsh requirement to the operation of installation process, there is deviation, gently then causes in any one link
Connector leakage, heavy then connector is caused to loosen, pressure leaks, or even causes safety accident.
Welding bulb type connection structure is also a kind of common conduit interconnection technique, is widely used in aerospace field,
But globe joint must be welded with conduit, be just able to achieve pipeline connection, made troubles to site operation.
Flared fitting, flanging type connector, the tension pull out force of walform formula connector are stronger, but require expensive, knot
The bulky special equipment of structure carries out pressure processing to the end of conduit, is allowed to be deformed into required horn mouth, tack or part
Bulge-structure is made troubles to site operation.
In conclusion all there is certain ask in existing various forms seal nipple, craftsmanship, sealing reliability etc.
Topic, all has that operative weldability is poor, sealing reliability is low, structure is not strong enough, corollary equipment is complicated, product cost is high, to leading
The problems such as pipe size required precision is excessively high.
Summary of the invention
The purpose of the present invention is: in higher pressure fluid application field, it is simply easy for installation to provide a kind of structure, while to leading
Pipe size required precision is low, on-site construction operations are simple, is connected firmly, the pipe connecting structure of sealed reliable.
To realize the above-mentioned technical purpose, the present invention provides a kind of pressure pipeline connection structure comprising: along pipeline axial direction cloth
The conduit and fitting body set and connected, and the cap nut for the connection that is mutually screwed with the one end outer surface of the fitting body,
Wherein: its further include: casing, described sleeve pipe includes: the sleeve body arranged and be socketed positioned at the periphery of the conduit, and is located at
The flange sections of described sleeve pipe body bottom portion excircle；The flange sections are located at the inside of the cap nut, and the flange sections
The both sides of the face limit that leans respectively with the outer end face of the inner face of the cap nut and the fitting body be engaged；And
In the region that described sleeve pipe ontology and the conduit coincide, described sleeve pipe ontology and the conduit have towards axis through pressing
Dress squeezes and forms the jointing that Inward deflection is mutually fixedly connected.
As a further improvement, in the jointing, the tube wall of described sleeve pipe ontology, which has to squeeze through press fitting, to be become
The tube wall of the outer extrusion deformation section to its axis offset that shape is formed, the conduit has and the outer extrusion deformation section phase
It corresponds to and abuts each other that position-limited hoop fastens the interior extrusion deformation section of connection.
As a further improvement, the outer extrusion deformation section and the interior radial cross-section for being squeezed and deformed section are equal
For regular polygon.
As a further improvement, the outer extrusion deformation section and the interior extrusion deformation section all have to respective axis
The indent indented area of line offset, the indent indented area have multiple and in the along the circumferential direction relatively described uniform cloth of regular polygon
Set, and on each face of the regular polygon in axial direction have two or three.
As a further improvement, the indent indented area is rectangle, the axial width of the indent indented area be 2 to
5 millimeters and mutually axially interval width be 3 to 6 millimeters, the regular polygon is square or regular hexagon.
As a further improvement, the inside of the fitting body includes: internal pipeline, is matched with the outer surface of the conduit
The connecting hole of conjunction, and the end outer surface of the fitting body has the external screw thread area being mutually threadedly coupled with the cap nut.
As a further improvement, between the connecting hole and the outer end face, the inside of the fitting body also has
Along the seal chamber of axis arrangement；And the O-ring for being arranged in the end of conduit periphery is located in the seal chamber.
As a further improvement, also axial in the outside of the O-ring, the seal chamber to be disposed with retaining ring, it is described
The limit that leans respectively with the bottom side of the flange sections and the O-ring of the two sides of retaining ring is engaged.
As a further improvement, the other end of the fitting body is fixedly connected with variable diameter conduit or conduit component.
As a further improvement, the conduit is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
For the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fitting body is isodiametric cylindrical surface, and described
The caliber of conduit is less than or equal to 2 inches.
Casing is fixed by the cap nut of end by the present invention, while being squeezed and deformed casing and being led by press fitting
Pipe is fixed in the axial direction, simple to the structure of conduit and casing and easy for installation.Simultaneously to pipe size required precision
Low, on-site construction operations are simple, are connected firmly, sealed reliable, can be applied to the pressure lower than 70MPa (especially 35-70MPa)
Pipeline connection.
Detailed description of the invention
Fig. 1 is fitting body one end connection schematic diagram；
Fig. 2 is casing schematic diagram；
Fig. 3 is fitting body schematic diagram；
Fig. 4 is fitting body both ends connection schematic diagram；
Fig. 5 is schematic diagram before briquetting is pressed；
Fig. 6 is the cross-sectional view of Fig. 5；
Fig. 7 is that briquetting is pressed schematic diagram；
Fig. 8 is the cross-sectional view of Fig. 6；With
Fig. 9 is the schematic diagram of briquetting.
Appended drawing reference: conduit 1, fitting body 2, outer end face 21, connecting hole 22, seal chamber 23, cap nut 3, casing 4, set
Tube body 41, flange sections 42, indent indented area 44, O-ring 5, retaining ring 6, briquetting 7 are closed spacing zone 72, impression item 73, groove
74, cavity 75, variable diameter conduit 8.
Specific embodiment
As shown in Figure 1 to 9, the present invention provides a kind of pressure pipeline connection structure comprising: it axially arranges and connects along pipeline
The conduit 1 and fitting body 2 connect, and the cap nut 3 for the connection that is mutually screwed with the end outer surface of the fitting body 2, in which:
Its further include: casing 4, described sleeve pipe 4 includes: the sleeve body 41 arranged and be socketed positioned at the periphery of the conduit 1, and is located at
The flange sections 42 in described sleeve pipe ontology 41 bottom cylindrical week；The flange sections 42 are located at the inside of the cap nut 3, and described
The both sides of the face of flange sections 42 lean with the outer end face 21 of the inner face of the cap nut 3 and the fitting body 2 limit respectively
Position is engaged；And in the region that described sleeve pipe ontology 41 and the conduit 1 coincide, described sleeve pipe ontology 41 and described lead
Pipe 1, which has towards axis, squeezes the jointing for forming Inward deflection and being mutually fixedly connected through press fitting.
Casing is fixed by the cap nut of end by the present invention, while will by being pressed extrusion deformation towards axis
Casing and conduit are fixed in the axial direction, form being fixedly connected for indent, and installation simple to the structure of conduit and casing
It is convenient., on-site construction operations low to pipe size required precision are simple simultaneously, are connected firmly, sealed reliable, can be applied to be lower than
The pressure pipeline of 70MPa (especially 35-70MPa) connects.
As a further improvement, in the jointing, the tube wall of described sleeve pipe ontology 41 has to be squeezed through press fitting
The outer extrusion deformation section to its axis offset formed is deformed, the tube wall of the conduit 1 has and the outer extrusion deformation area
Section is corresponding and abuts each other that position-limited hoop fastens the interior extrusion deformation section of connection.
As a further improvement, the outer extrusion deformation section and the interior radial cross-section for being squeezed and deformed section are equal
For regular polygon.
As a further improvement, the outer extrusion deformation section and the interior extrusion deformation section all have to respective axis
The indent indented area 44 of line offset, the indent indented area 44 have multiple and equal in the along the circumferential direction relatively described regular polygon
Even arrangement, and on each face of the regular polygon in axial direction have two or three.
As a further improvement, the indent indented area 44 is rectangle, the axial width of the indent indented area 44
For 2 to 5 millimeters and mutually axially interval width is 3 to 6 millimeters, and the regular polygon is square or regular hexagon.
As a further improvement, the inside of the fitting body 2 includes: internal pipeline, the outer surface phase with the conduit 1
The connecting hole 22 of cooperation, and the end outer surface of the fitting body 2 has the external screw thread being threadedly coupled with 3 phase of cap nut
Area.
As a further improvement, between the connecting hole 22 and the outer end face 21, the inside of the fitting body 2 is also
With the seal chamber 23 arranged along axis；And the O-ring 5 for being arranged in the 1 end periphery of conduit is located in the seal chamber 23.
As a further improvement, also axial in the outside of the O-ring 5, the seal chamber 23 to be disposed with retaining ring 6.
It is as a further improvement, also axial in the outside of the O-ring 5, the seal chamber 23 to be disposed with retaining ring 6,
The limit that leans respectively with the bottom side of the flange sections 42 and the O-ring 5 of the two sides of the retaining ring 6 is engaged.
As a further improvement, the other end of the fitting body 2 is fixedly connected with variable diameter conduit 8 or conduit component.
Fitting body 2 can be used connection structure provided by the present invention and continue to connect other conduit components, such as valve, or such as Fig. 4 institute
The variable diameter conduit 8 shown, fitting body both ends connect different conduits, realize the connection of upstream and downstream.
As a further improvement, the conduit 1 is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
41 be the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fitting body 2 is isodiametric cylindrical surface, and institute
The caliber for stating conduit 1 is less than or equal to 2 inches.The present invention without using special constructions such as tilt angle, flange, adopting in the prior art
It is reliably connected with can be thus achieved using cylindrical pipe member.
Correspondingly, the present invention provides a kind of installation tool pressing tongs and briquetting, as press mounting tool used in the present invention its
Structure is also simple, simple operations and realizes fixation at the scene.It is described in a kind of pressure pipeline connection structure of the present invention
Jointing is pressed by pressing tongs is squeezed and deformed molding, and the briquetting 7 of opposite opening and closing movement, institute are respectively disposed with inside the pressing tongs
The inside for stating briquetting 7 include positioned at middle part and lean with the jointing contact and it be pressed be squeezed and deformed it is molding
It is pressed area, and positioned at the closure spacing zone 72 of press fitting area's radial direction upper and lower ends.
As a further improvement, the impression item 73 of protrusion is disposed in the press fitting area.
As a further improvement, the impression item 73 has a plurality of and is spaced apart from each other parallel arrangement, in the adjacent pressure
There is groove 74 between trace item 73.
As a further improvement, the axial width of the impression item 73 is 2 to 5 millimeters, the axial width of the groove
It is 3 to 6 millimeters.
As a further improvement, the impression item 73 has two or three.
As a further improvement, the outside of the briquetting 7 has the arc surface matched with the pressing tongs.
As a further improvement, the press fitting area is located at the middle part of the briquetting 7, and institute along the axial direction of the briquetting 7
The axial ends for stating briquetting 7 also has cavity 75.
As a further improvement, the pressing tongs is hand-hydraulic pressing tongs or electric hydaulic pressing tongs.
Connection structure of the present invention has multiple technical effects and advantage:
1. the size tolerance requirements of pair conduit are not high, various domestic conduits can be generally adapted to, do not need to connect as bite type tube
Head like that, has purchased the import cutting ferrule of certain company, must just buy its matched Imported Precision conduit；
2. pair operator's technical level and operating process requirement are low, it is not required to train by complexity, can be operated；
3. supporting tool is simple, cheap, using conventional manual or Electric hydraulic tool, mating special caliper
Implement the crimping of conduit scene；Do not need as flared fitting, flanging type connector, walform formula connector matched price it is expensive,
Inconvenient complex device is carried, does not also need to weld；
4. the extrusion deformation by casing provides powerful anti-pulling-out force, it is connected firmly, antivibration kinetic force is strong, and there is no draw
De- hidden danger；
5. the high pressure seal structure for adding O-ring to combine using retaining ring is widely portable to lower than 70MPa (especially 35-
70MPa) high pressure gas occasion, sealed reliable, repeat assembled, only need to change retaining ring and O-ring, have than collar joint,
The first-class hard seal nipple of solder sphere more repeats assembly number；
6. superpressure explosion risk is not present: under extreme pressure, axial small shifting will be generated between casing and conduit
It is dynamic, after conduit is withdrawn into except O-ring position, overpressure can safe release, to avoid conduit superpressure explosion；
7. having apparent conduit purchase cost, product cost and corollary equipment purchase cost advantage.
The pipeline connected using the present invention can be can be used for lower than 70MPa (especially by 3 times of hydraulic pressure strength experiment examinations
Pressure environment 35-70MPa), such as electric piston compressor.
Correspondingly, the present invention provides a kind of pressure pipeline connection method comprising:
Casing 4: being sleeved on the periphery of conduit 1 along axial direction by step 1, and described sleeve pipe 4 includes: positioned at the outer of the conduit 1
Week arranges and the sleeve body 41 that is socketed, and positioned at the flange sections 42 in described sleeve pipe ontology 41 bottom cylindrical week, and the flange
The periphery of section 42 is set with cap nut 3；
Step 2: the cap nut 3 is threadedly coupled with the one end of fitting body 2, and makes the flange sections 42
The both sides of the face limit that leans respectively with the outer end face 21 of the inner face of the cap nut 3 and the fitting body 2 is engaged；
Step 3: it in the region that described sleeve pipe ontology 41 and the conduit 1 coincide, is squeezed by being pressed towards axis
Inward deflection is formed, described sleeve pipe ontology 41 is fixedly connected with the conduit 1 and forms jointing.
As a further improvement, the pressure in the pipeline is lower than 70MPa, preferably 35-70MPa.
As a further improvement, the one end outer surface of the fitting body 2 has and is threadedly coupled with the cap nut 3
External screw thread.
As a further improvement, in step 1, the 1 end periphery of conduit is disposed with O-ring 5.
As a further improvement, between the connecting hole 22 and the outer end face 21, in the connecting hole 22 and institute
It states between outer end face 21, the inside of the fitting body 2 also has the seal chamber 23 along axis arrangement, and the O-ring 5 is located at described
In seal chamber 23；And retaining ring 6 is also axially disposed in the outside of the O-ring 5, the seal chamber 23, the two of the retaining ring 6
Side leans with the bottom side of the flange sections 42 and the O-ring 5 respectively limits the two sides difference for the retaining ring 6 that is engaged
It is engaged with the limit that leans of the bottom side and the O-ring 5 of the flange sections 42.
As a further improvement, the other end of the fitting body 2 is fixedly connected with variable diameter conduit 8 or conduit component.
As a further improvement, the conduit 1 is the cylindrical tube with uniform wall thickness and diameter, described sleeve pipe ontology
41 be the cylindrical tube with uniform wall thickness and diameter, and the external screw thread area of the fitting body 2 is isodiametric cylindrical surface.
As a further improvement, in step 3, the jointing is pressed by pressing tongs is squeezed and deformed molding, described
Be respectively disposed with the briquetting 7 of opposite opening and closing movement inside pressing tongs, the inside of the briquetting 7 include positioned at middle part and with the company
It connects section and leans to contact and be pressed it and be squeezed and deformed molding press fitting area, and positioned at press fitting area's radial direction upper and lower ends
It is closed spacing zone 72.
As a further improvement, the impression item 73 of two or three protrusion, the pressure are disposed in the press fitting area
Trace item 73 has a plurality of and is spaced apart from each other parallel arrangement, has groove 74 between the adjacent impression item 73；The impression item
73 axial width is 2 to 5 millimeters, and the axial width of the groove is 3 to 6 millimeters.
As a further improvement, the pressing tongs is hand-hydraulic pressing tongs or electric hydaulic pressing tongs.
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party
Case is illustrated as just example.The protection scope of the desired essence of the application is more embodied in independent claims offer
Range and its dependent claims.
Claims (10)
1. a kind of pressure pipeline connection structure comprising: the conduit (1) and fitting body (2) axially arranged and connected along pipeline, and
Mutually be screwed the cap nut (3) of connection with the one end outer surface of the fitting body (2), it is characterised in that:
Its further include: casing (4), described sleeve pipe (4) they include: the casing sheet arranged and be socketed positioned at the periphery of the conduit (1)
Body (41), and it is located at the flange sections (42) in described sleeve pipe ontology (41) bottom cylindrical week；
The flange sections (42) are located at the inside of the cap nut (3), and the both sides of the face of the flange sections (42) respectively with
The limit that leans of the inner face of the cap nut (3) and the outer end face (21) of the fitting body (2) is engaged；And
In the region that described sleeve pipe ontology (41) and the conduit (1) coincide, described sleeve pipe ontology (41) and the conduit
(1) have towards axis and squeeze the jointing for forming Inward deflection and being mutually fixedly connected through press fitting.
2. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that: described in the jointing
The tube wall of sleeve body (41), which has, is squeezed and deformed the outer extrusion deformation section to its axis offset formed through press fitting, described to lead
The tube wall of pipe (1) has corresponding with the outer extrusion deformation section and abuts each other that position-limited hoop fastens the interior extruding change of connection
Shape section.
3. a kind of pressure pipeline connection structure as claimed in claim 2, it is characterised in that: the outer extrusion deformation section and institute
Stating the interior radial cross-section for being squeezed and deformed section is regular polygon.
4. a kind of pressure pipeline connection structure as claimed in claim 3, it is characterised in that: the outer extrusion deformation section and institute
It states interior extrusion deformation section and all has indent indented area (44) to respective axis offset, the indent indented area (44) has more
It is a and be evenly arranged in the along the circumferential direction relatively described regular polygon, and on each face of the regular polygon in axial direction
Have two or three.
5. a kind of pressure pipeline connection structure as claimed in claim 4, it is characterised in that: the indent indented area (44) is length
Rectangular, the axial width of the indent indented area (44) is 2 to 5 millimeters and mutually axially interval width is 3 to 6 millimeters, described
Regular polygon is square or regular hexagon.
6. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that: wrap the inside of the fitting body (2)
It includes: internal pipeline, the connecting hole (22) matched with the outer surface of the conduit (1), and the end appearance of the fitting body (2)
Face has the external screw thread area being mutually threadedly coupled with the cap nut (3).
7. a kind of pressure pipeline connection structure as claimed in claim 6, it is characterised in that:
Between the connecting hole (22) and the outer end face (21), the inside of the fitting body (2) also has to be arranged along axis
Seal chamber (23)；And
The O-ring (5) for being arranged in the conduit (1) end periphery is located in the seal chamber (23).
8. a kind of pressure pipeline connection structure as claimed in claim 7, it is characterised in that: in the outside of the O-ring (5),
It is also axial in the seal chamber (23) to be disposed with retaining ring (6), the two sides of the retaining ring (6) bottom with the flange sections (42) respectively
The limit that leans of side and the O-ring (5) is engaged the two sides bottom with the flange sections (42) respectively of the retaining ring (6)
The limit that leans of side and the O-ring (5) is engaged.
9. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that: the other end of the fitting body (2)
Portion is fixedly connected with variable diameter conduit (8) or conduit component.
10. a kind of pressure pipeline connection structure as described in claim 1, it is characterised in that: the conduit (1) is with uniform
Wall thickness and diameter cylindrical tube, described sleeve pipe ontology (41) is the cylindrical tube with uniform wall thickness and diameter, and described is connect
The external screw thread area of head body (2) is isodiametric cylindrical surface, and the caliber of the conduit (1) is less than or equal to 2 inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454971.3A CN109973727A (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454971.3A CN109973727A (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973727A true CN109973727A (en) | 2019-07-05 |
Family
ID=67074170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711454971.3A Pending CN109973727A (en) | 2017-12-28 | 2017-12-28 | A kind of pressure pipeline connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983247A (en) * | 2021-11-17 | 2022-01-28 | 中车南京浦镇车辆有限公司 | Exempt from to screw up coupling based on solidification expanding material |
| WO2023005802A1 (en) * | 2021-07-28 | 2023-02-02 | 劢析科学仪器(苏州)有限公司 | Pipe having seal head, pipe connector, and liquid chromatography system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09189382A (en) * | 1996-01-10 | 1997-07-22 | Usui Internatl Ind Co Ltd | Connecting structure between 1-joint and narrow-diameter metal pipe and joining method thereof |
| CN204243434U (en) * | 2014-12-18 | 2015-04-01 | 国网四川省电力公司成都市青白江供电分公司 | Adopt the hydraulic pressure Press Plier of the disposable crimping shaping dies of 240mm |
| CN204747299U (en) * | 2015-06-30 | 2015-11-11 | 国家电网公司 | Supporting crimping mould of hydraulic pressure crimping pinchers |
| WO2017026898A1 (en) * | 2015-08-10 | 2017-02-16 | Thor Frölich Braathen | A fitting to connect water pipes |
| CN207729080U (en) * | 2017-12-28 | 2018-08-14 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
-
2017
- 2017-12-28 CN CN201711454971.3A patent/CN109973727A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09189382A (en) * | 1996-01-10 | 1997-07-22 | Usui Internatl Ind Co Ltd | Connecting structure between 1-joint and narrow-diameter metal pipe and joining method thereof |
| CN204243434U (en) * | 2014-12-18 | 2015-04-01 | 国网四川省电力公司成都市青白江供电分公司 | Adopt the hydraulic pressure Press Plier of the disposable crimping shaping dies of 240mm |
| CN204747299U (en) * | 2015-06-30 | 2015-11-11 | 国家电网公司 | Supporting crimping mould of hydraulic pressure crimping pinchers |
| WO2017026898A1 (en) * | 2015-08-10 | 2017-02-16 | Thor Frölich Braathen | A fitting to connect water pipes |
| CN207729080U (en) * | 2017-12-28 | 2018-08-14 | 上海瀚氢动力科技有限公司 | A kind of pressure pipeline connection structure |
Non-Patent Citations (1)
| Title |
|---|
| 张东初: "《创造性设计学》", 河南人民出版社, pages: 189 - 190 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005802A1 (en) * | 2021-07-28 | 2023-02-02 | 劢析科学仪器(苏州)有限公司 | Pipe having seal head, pipe connector, and liquid chromatography system |
| CN113983247A (en) * | 2021-11-17 | 2022-01-28 | 中车南京浦镇车辆有限公司 | Exempt from to screw up coupling based on solidification expanding material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2470817B1 (en) | Press-connect fitting with improved grab-ring function | |
| EP2564104B1 (en) | High-pressure tube fittings and end-face preparation tools | |
| CN208074342U (en) | It is a kind of to carry splicing type flange of the positioning to aperture apparatus | |
| CN207729080U (en) | A kind of pressure pipeline connection structure | |
| CN109973727A (en) | A kind of pressure pipeline connection structure | |
| JP5915918B2 (en) | High pressure pipe joints and joint structures | |
| US7942456B2 (en) | Fluid conduits with integral end fittings and associated methods of manufacture and use | |
| CN207729087U (en) | A kind of pressure pipeline fastening means | |
| CN109973726A (en) | A kind of pressure pipeline connection method | |
| US20200166162A1 (en) | A connector | |
| JP2021152415A (en) | Assembly of flexible tube and fitting body, and method thereof | |
| KR102038188B1 (en) | Device for coaxially connecting two pipelines, and an arrangement for disconnecting same | |
| US20180202586A1 (en) | Pipe Coupling Fitting With Internal Spacer Sleeve | |
| CN107893887A (en) | A kind of expansion type joint of flexible pipe | |
| US3207537A (en) | Pipe connections | |
| JP2013170589A (en) | Screwing-in type pipe joining structure for pressure pipe | |
| CN208365000U (en) | Pipe sealing structure and the vehicle for using the structure | |
| CN207455001U (en) | A kind of extrusion type joint of hose | |
| CN206929475U (en) | The high bearing pipe of CO2 system high efficiencies | |
| JP2006250341A (en) | Pipe connecting method and pipe connecting structure | |
| JP2020529561A (en) | Pipeline molding Pipe end areas and pipe thread connections | |
| CN215371454U (en) | Screwed joint and pipeline connecting structure | |
| CN109282093A (en) | Squash type pipe connection system | |
| CN107940129A (en) | Pipeline connection structure and have its vehicle air conditioning system | |
| KR101540109B1 (en) | Pipe connector assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |